To determine if a purchase is worth it, calculate the : 4 Times It Makes Sense to Buy Airline Miles - NerdWallet
: Some airlines (like Virgin Atlantic) charge high surcharges on award tickets, which can make a "free" flight more expensive than a cash ticket. How to Calculate the Value does it make sense to buy airline miles
: It is almost never worth buying miles for coach/economy seats, as the cash fare is typically lower than the cost of the miles needed. To determine if a purchase is worth it,
: If your existing balance is about to expire, buying the minimum amount of miles can reset the clock and save your entire stash. When to Avoid Buying does it make sense to buy airline miles